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Influence of B4C Reinforcement Particles with Varying Sizes on the Tensile Failure and Fractography of LM29 Alloy Composites

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Abstract

In the present work, an attempt has been made to study the mechanical behavior and tensile fractography of 40- and 90-micron-sized boron carbide (B4C) particulate-reinforced light metal (LM) 29 alloy composites. LM29 alloy with 3, 6 and 9 wt. % of 40- and 90-micron-sized B4C composites was synthesized by liquid stir method. Microstructural analyses were obtained by using scanning electron micrographs and energy-dispersive spectrographs. Mechanical properties like hardness, ultimate, yield strength and ductility were evaluated as per American Society for Testing and Materials standards. Scanning electron microscope micrographs show the even dispersal of B4C particulates in the LM29 alloy, and this is confirmed by energy-dispersive spectroscopy analysis. Further, hardness, ultimate and yield strength of matrix LM29 alloy were enriched with the addition of B4C reinforcement and were more in the case of 40-micron-sized reinforced composites. There was small decrease in ductility of composites in both cases.

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Authors and Affiliations

  1. Department of Mechanical Engineering, AMC College of Engineering, Bangalore, 560083, India

    G. Pathalinga Prasad

  2. Department of Mechanical Engineering, UVCE, Bangalore, 560001, India

    H. C. Chittappa

  3. Aircraft Research and Design Centre, Hindustan Aeronautics Limited, Bangalore, 560037, India

    Madeva Nagaral

  4. Department of Mechanical Engineering, Siddaganga Institute of Technology, Tumakuru, 587103, India

    V. Auradi

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  1. G. Pathalinga Prasad
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  2. H. C. Chittappa
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Correspondence to Madeva Nagaral.

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Prasad, G.P., Chittappa, H.C., Nagaral, M. et al. Influence of B4C Reinforcement Particles with Varying Sizes on the Tensile Failure and Fractography of LM29 Alloy Composites. J Fail. Anal. and Preven. 20, 2078–2086 (2020). https://doi.org/10.1007/s11668-020-01021-6

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